Using minimum storage sizes, storage sizes less than or not on a 64K boundary for architecture level
ALS0 (S/370) or not on a 1M boundary for architecture level ALS1 (ESA/390) and higher, it may be pos-
sible to generate error conditions not covered by the “Principles of Operations”.
Use of storage sizes greater than supported by the guest operating system may generate incorrect re-
sults or error conditions within the guest operating system.
5.23.4 Overview Storage Allocation Units
Unit
Multiplier
Name (Symbol)
IEC Name (IEC Symbol)
Restrictions
B
None
Byte (B)
Byte (B)
Main storage only
K
2**10
Kilobyte (kB)
Kibibyte (KiB)
Main storage only
M
2**20
Megabyte (MB)
Mebibyte (MiB)
G
2**30
Gigabyte (GB)
Gibibyte (GiB)
T
2**40
Terabyte (TB)
Tebibyte (TiB)
Not on 32-bit machines
P
2**50
Petabyte (PB)
Pebibyte (PiB)
Not on 32-bit machines
E
2*60
Exabyte (EB)
Exbibyte (EiB)
Not on 32-bit machines
Table 5: Storage Allocation Units
5.23.5 Examples
Example 1:
Set the size of the main storage to 1024 MB. Do not lock the memory into the storage.
DEFSTORE MAIN 1024
or
DEFSTORE MAIN 1024 UNLOCK
or
DEFSTORE MAIN 1024M
or
DEFSTORE MAIN 1024M UNLOCK